Not a busy channel this one is it? Is there somewhere else where v8 devs hangout? Anyway, I got something working, despite the lack of docs, thanks Izs for the doxygen dump that helps a lot. Still not really got my head around how and when v8 is freeing up memory, when its taking copies and when I need to clean after myself. Presumably my code has a lot of leaks but anyway #!/bin/js is born! I can now convert my bash scripts